Convert String to Integer

Code

#include <stdio.h>
#include <stdint.h>

int custom_atoi(const char *str) {
    // Your logic here
    uint8_t j=0; 
    int num =0; 
    int sign =1; 

    if (str[j]=='-') {
        sign =-1;
        j++;
    } else if (str[j]=='+') {
        j++;
    }
    while (str[j]>='0'&&str[j]<='9') {
        num=num*10+(str[j]-'0');
        j++;
    }
    return sign*num; 
}

int main() {
    char str[101];
    fgets(str, sizeof(str), stdin);

    // Remove newline
    uint8_t i = 0;
    while (str[i]) {
        if (str[i] == '\n') {
            str[i] = '\0';
            break;
        }
        i++;
    }

    printf("%d", custom_atoi(str));
    return 0;
}

Solving Approach